Usually when I do weight training, I might do 6-10 reps. However, it's usually the case that I work until I can't lift, and I stop there and don't try to do too more in case I injure myself.

However, if I keep the reps low and try heavier weights, I might get the form done incorrectly. I was wondering if I could increase the reps from say, 6 to 12 (I can maintain form better) and lower the weights. In that sense, if I do that and it's the same intensity, does it still produce optimal gains?

I honestly though that people just did heavier weights to save time, but lower weights and more reps helps me improve my form.

Usually when I do weight training, I might do 6-10 reps. However, it's usually the case that I work until I can't lift, and I stop there and don't try to do too more in case I injure myself.

However, if I keep the reps low and try heavier weights, I might get the form done incorrectly. I was wondering if I could increase the reps from say, 6 to 12 (I can maintain form better) and lower the weights. In that sense, if I do that and it's the same intensity, does it still produce optimal gains?

I honestly though that people just did heavier weights to save time, but lower weights and more reps helps me improve my form.

Put on a weight that is heavy but you can still do with CORRECT FORM for all of the reps or until the last one or two where you get weaker and ur friend helps you......

When you train with low reps and heavy weights....you will need a spotter to be most effective...sometimes they will have to help you on your last couple reps....Always worked for me back when I was gaining strength fast.....back then I wanted to gain strength so...somedays I did 10-12 reps....some days I put it heavier and just did 6 reps...sometimes even just around 4-5 sets of 3-4 reps with heavier weights.....but that was mostly my core exercises that I did that on....I mainly do around 12 reps for most exercises..

Now I usually just work out alone so I don't have a spotter....so I just lift to maintain with lighter weights...

Where do people get this idea or are so obssessed about reps and intensity you will get the same effect by doing 10 reps of X weight and doing 20 reps of half of X.

Remember you are fatiguing your muscles and effetively damaging them so they grow back bigger and stronger. If you are looking to get bigger its actually more important you eat right and rest right than worrying about your intesity and the number of reps. You need to find a balance and the most efficient way to build up to lifting heavier weights. If you wanna tone up then doing lots of reps is the way to go.